禿ちびる

ichidan verb, intransitive verb

get blunt; dull; wear out

Describes the edge of a blade or a point becoming dull through use. Often used for knives, scissors, or pencils.

• この包ほう丁ちょうはもう禿ちびてしまった。

  This kitchen knife has already gotten blunt.

• 鉛えん筆ぴつの先さきが禿ちびたので、削けずらなければならない。

  The pencil tip has worn down, so I need to sharpen it.